ECM СНЯТИЕ

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during the ECM removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced
Replacement Part or Procedure Necessary Procedures Effects/Inoperative when not Performed Link
Battery terminal is disconnected/reconnected Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes) Stop and start system

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Memorize steering angle neutral point Panoramic view monitor system

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Initialize back door lock Power door lock control system

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Initialize servo motor Power door lock control system

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Reset slide door close position Power slide door system

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Reset back door close position Power back door system

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Replacement of ECM Perform Vehicle Identification Number (VIN) or frame number registration DTC is stored

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ECU Communication ID Registration (Immobiliser system) Engine start function See Service Bulletin for the registration method.

Perform the following procedures in the order shown:


  1. Reset Memory

  2. Deceleration Sensor 0 Point Calibration

  3. CVT Oil Pressure Calibration

  • DTCs are stored

  • Neutral control is prohibited

  • Deterioration of fuel efficiency

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Perform code registration (Immobiliser system)

  • Wireless door lock control system

  • Smart entry and start system

  • Engine start function

  • Steering lock system

 See Service Bulletin for the registration method.
Replacement of battery Switch battery type Stop and Start System

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PROCEDURE


  1. PRECAUTION

    Note


    • After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

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    • If the ECM has been struck or dropped, replace it.

    • Perform the Vehicle Identification Number (VIN) registration when replacing the ECM.

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  2. REMOVE RADIATOR COVER SUB-ASSEMBLY (for ALPHARD)

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  3. REMOVE RADIATOR COVER SUB-ASSEMBLY (for VELLFIRE)

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  4. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

    Note

    When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

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  5. REMOVE BATTERY

    Click here

  6. REMOVE AIR CLEANER CAP SUB-ASSEMBLY

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  7. REMOVE AIR CLEANER CASE SUB-ASSEMBLY

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  8. REMOVE INLET NO. 1 AIR CLEANER


    1. B006ON8

      Remove the bolt and inlet No. 1 air cleaner.

  9. REMOVE INLET NO. 2 AIR CLEANER


    1. B006PU5

      Remove the bolt and inlet No. 2 air cleaner.

  10. REMOVE ECM


    1. B006Q7Z

      Raise the 2 levers while pushing the locks on the levers, and disconnect the 2 ECM connectors.

      Note

      After disconnecting the ECM connectors, make sure that dirt, water or other foreign matter does not contact the connecting parts of the ECM connectors.

    2. B006OMGC01
      *a Wire Harness Clamp
      *b Guide

      Disengage the wire harness clamp.

    3. Remove the 2 bolts and disengage the guide to remove the ECM.

      Note

      If the ECM has been struck or dropped, replace it.

  11. REMOVE NO. 1 ECM BRACKET


    1. B006OLM

      Remove the 2 screws and No. 1 ECM bracket from the ECM.

  12. REMOVE NO. 2 ECM BRACKET


    1. B006N36

      Remove the 2 screws and No. 2 ECM bracket from the ECM.